Deposition and movement laws of particles in fluctuating oil product pipelines

doi:10.7623/syxb201604012

Acta Petrolei Sinica ›› 2016, Vol. 37 ›› Issue (4): 523-530.DOI: 10.7623/syxb201604012

• Petroleum Engineering • Previous Articles Next Articles

Deposition and movement laws of particles in fluctuating oil product pipelines

Sui Bing^1,2, Liu Gang², Li Bo², Zhao Jialiang², Chen Lei²

1. Sinopec Petroleum Engineering Company, Shandong Dongying 257000, China;
2. Shandong Key Laboratory of Oil & Gas Storage and Transport Safety Engineering, Shandong Qingdao 266580, China

Received:2015-08-30 Revised:2016-02-24 Online:2016-04-25 Published:2016-05-06

颗粒在起伏成品油管道中的沉积运移规律

隋冰^1,2, 刘刚², 李博², 赵家良², 陈雷²

1. 中国石油化工股份有限公司石油工程设计有限公司山东东营 257000;
2. 山东省油气储运安全省级重点实验室山东青岛 266580

通讯作者: 刘刚,男,1975年10月生,1998年获石油大学(华东)学士学位,2004年获中国石油大学(华东)工学博士学位,现为中国石油大学(华东)教授,主要从事油气储运工程方面的研究和教学工作。Email:liugang@upc.edu.cn
作者简介:隋冰,男,1989年11月生,2012年获中国石油大学(华东)油气储运工程专业学士学位,2015年获中国石油大学(华东)油气储运工程专业硕士学位,现为中国石油化工股份有限公司石油工程设计有限公司助理工程师,主要从事油气长距离管输技术方面的研究工作。Email:969008283@qq.com
基金资助:
中国石油科技创新基金项目(2014D-5006-0604)、中国石油化工股份有限公司科研项目(314013)和中央高校基本科研业务费专项基金项目(13CX06057A,14CX06070A)资助。

Abstract

Abstract:

The sedimentation of impurity particles in oil product pipelines may increase water accumulation in the pipelines and lead to internal pipeline corrosion. Through establishing the experimental loop system of oil product carrying water and impurities, this study explores the sedimentary movement laws of particles in oil product pipelines, measures the critical velocity of removing particles from pipelines, and takes into consideration the influences of particle sedimentation on oil-carrying-water movement. According to experimental phenomena, the critical velocity is divided into available sedimentary critical velocity and stable sedimentary critical velocity to determine whether particle sedimentation and stable sedimentation may occur. Using LES-DEM coupling calculation method, numerical simulation was performed on particle sedimentary movement through imitating the experimental process. The simulation results show that impurity particles usually settle at the high point posterior to the updip section. Particle sedimentation is prone to induce water accumulation; if it was required to eliminate water accumulation, particles should be removed simultaneously. Both critical velocities increase with the pipeline dip angle increasing, less influenced by particle size and with no relation to the particle content in pipelines. The experimental phenomenon of particle sedimentation at the high point of pipeline is validated by numerical simulation.

Key words: solid-liquid two-phase flow, oil product pipeline, impurity particles, sedimentary movement, critical velocity

摘要：

成品油管道中杂质颗粒的沉积会增加管道内积水,腐蚀管道。通过建立的成品油携水携杂质实验环道系统,研究了成品油管道中颗粒的沉积运移规律,测量了将颗粒从管道中清除的临界流速,同时考虑了颗粒沉积对油携水运动的影响。根据实验现象,将临界流速划分为可沉积临界流速和稳定沉积临界流速,分别界定颗粒是否会产生沉积和是否会稳定沉积。采用LES-DEM耦合计算方法,仿照实验过程对颗粒的沉积运移进行数值模拟。实验和模拟结果表明:杂质颗粒一般会在上倾管段之后的高点位置沉积;颗粒沉积后容易引发积水,若要将积水清除,须同时将颗粒清除;2种临界流速随管道倾角的增大而增大,受颗粒尺寸影响较小,与管道中颗粒的含量无关;数值模拟验证了颗粒在管道高点位置沉积的实验现象。

关键词: 固-液两相流, 成品油管道, 杂质颗粒, 沉积运移, 临界流速

CLC Number:

TE83

Sui Bing, Liu Gang, Li Bo, Zhao Jialiang, Chen Lei. Deposition and movement laws of particles in fluctuating oil product pipelines[J]. Acta Petrolei Sinica, 2016, 37(4): 523-530.

隋冰, 刘刚, 李博, 赵家良, 陈雷. 颗粒在起伏成品油管道中的沉积运移规律[J]. 石油学报, 2016, 37(4): 523-530.

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Deposition and movement laws of particles in fluctuating oil product pipelines

颗粒在起伏成品油管道中的沉积运移规律

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